Homeostasis And Basic Structure
Covers tissues, glands, and organ systems.
Environments, feedback, and other things.
Questions and Answers
- 1.
Homeostasis is kept in range by
- A.
Composition
- B.
Volume
- C.
Blood pressure
- D.
Temperature
- E.
Polarity
Correct Answer
E. Polarity -
- 2.
__________ is the science of body function.
Correct Answer
PhysiologyExplanation
Physiology is the study of how the body functions. It focuses on understanding the mechanisms and processes that occur within living organisms, including humans. This field explores the functions of different organs, tissues, and cells, as well as the interactions between them. By studying physiology, scientists gain insights into the normal functioning of the body and how it responds to various stimuli or conditions. This knowledge is crucial for understanding diseases, developing treatments, and improving overall health.Rate this question:
- 3.
_________ consist of cells having similar function and structure.
Correct Answer
TissuesExplanation
Tissues consist of cells that have similar function and structure. Tissues are groups of cells that work together to perform a specific function in the body. They have similar characteristics and are organized in a way that allows them to carry out their specialized tasks effectively. The cells within a tissue are specialized to perform specific functions, such as providing support, transporting substances, or transmitting electrical signals. The structure and function of tissues vary depending on their type, such as epithelial, connective, muscle, or nervous tissue. Overall, tissues are essential building blocks of the body, allowing for the coordination and integration of different functions.Rate this question:
- 4.
Fat, bone, and blood are examples of __________ tissues.
Correct Answer
connectiveExplanation
Fat, bone, and blood are examples of connective tissues. Connective tissues are the most abundant and diverse type of tissue in the body. They provide support, protection, and structure to organs and other body parts. Fat tissue, also known as adipose tissue, stores energy and insulates the body. Bone tissue provides a framework for the body and protects vital organs. Blood tissue is responsible for transporting oxygen, nutrients, and waste products throughout the body. All of these tissues share the common characteristic of being connective tissues, which connect, support, and bind different parts of the body together.Rate this question:
- 5.
_____ is considered connective tissue because it provides avenues of communication throughout the body.
Correct Answer
BloodExplanation
Blood is considered connective tissue because it functions as a communication network throughout the body. It transports oxygen, nutrients, hormones, and waste products to various organs and tissues, allowing them to communicate and coordinate their activities. Additionally, blood contains immune cells that defend against infections and help in maintaining overall body homeostasis. Its ability to circulate throughout the body and connect different parts makes blood an essential connective tissue.Rate this question:
- 6.
Which of the following is not a function of connective tissues?
- A.
Tendons anchoring muscle to bone
- B.
Ligaments connecting bones together
- C.
Supporting the body
- D.
Covers skin and lines hollow organs
- E.
Providing avenues of communication
Correct Answer
D. Covers skin and lines hollow organsExplanation
Connective tissues have several functions in the body, including providing support, connecting and anchoring different structures, and facilitating communication between cells. Tendons anchor muscles to bones, ligaments connect bones together, and supporting the body is also a function of connective tissues. However, covering the skin and lining hollow organs is not a function of connective tissues. This role is performed by epithelial tissues, which are specialized for protection and secretion.Rate this question:
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- 7.
______ initiate and transmit electrical signals.
Correct Answer
NeuronsExplanation
Neurons are specialized cells in the nervous system that initiate and transmit electrical signals. They play a crucial role in the communication and functioning of the brain and other parts of the body. Neurons are responsible for receiving and processing information from the environment, as well as sending signals to other neurons or muscles to produce specific actions or responses. Through their ability to generate and transmit electrical impulses, neurons enable the complex network of communication that underlies all our thoughts, sensations, and behaviors.Rate this question:
- 8.
Muscle tissues are divided into ____, _____, and ______.
Correct Answer
smooth, cardiac, and skeletalExplanation
Muscle tissues are classified into three types: smooth, cardiac, and skeletal. Smooth muscle tissue is found in the walls of hollow organs, blood vessels, and the digestive system, and it helps with involuntary movements. Cardiac muscle tissue is specific to the heart and is responsible for its contraction, allowing it to pump blood throughout the body. Skeletal muscle tissue is attached to bones and provides voluntary movements, such as walking or lifting objects. These three types of muscle tissues have different structures and functions, making them essential for various bodily processes.Rate this question:
- 9.
_____ muscle tissue controls movement through hollow tubes and organs.
Correct Answer
SmoothExplanation
Smooth muscle tissue is responsible for controlling movement through hollow tubes and organs in the body. Unlike skeletal muscle, which is under voluntary control, smooth muscle is involuntary and contracts and relaxes to move substances through various organs such as the intestines, blood vessels, and the uterus. It is called "smooth" muscle because its cells lack the striations or bands that are present in skeletal and cardiac muscle cells. Smooth muscle tissue is found in the walls of organs and structures throughout the body and plays a vital role in maintaining normal bodily functions.Rate this question:
- 10.
____ muscle tissue pumps blood.
Correct Answer
CardiacExplanation
Cardiac muscle tissue pumps blood. This type of muscle is found in the walls of the heart and is responsible for the rhythmic contractions that propel blood through the circulatory system. Unlike skeletal muscle, cardiac muscle is involuntary, meaning it contracts without conscious control. The specialized cells in cardiac muscle tissue are interconnected and form a network that allows electrical impulses to spread quickly, coordinating the contraction of the heart chambers and ensuring efficient blood flow.Rate this question:
- 11.
_____ muscle tissue moves bones.
Correct Answer
SkeletalExplanation
Skeletal muscle tissue is responsible for moving bones. It is attached to the bones by tendons and contracts to produce movement. This type of muscle tissue is striated and voluntary, meaning it is under conscious control. Skeletal muscles work in pairs or groups to create coordinated movements, allowing us to perform various activities such as walking, running, and lifting objects.Rate this question:
- 12.
_______ tissues are divided into galnds and epithelia.
Correct Answer
EpithelialExplanation
Epithelial tissues are divided into glands and epithelia. This means that within the category of epithelial tissues, there are two subcategories: glands and epithelia. Epithelial tissues are the outermost layer of cells that cover surfaces and line body cavities. Glands, on the other hand, are specialized epithelial tissues that secrete substances such as hormones or enzymes. Therefore, the correct answer is "Epithelial."Rate this question:
- 13.
_______ tissue covers skin and lines hollow organs, with the internal cavity called _____.
Correct Answer
Epithelia, lumenExplanation
Epithelial tissue is a type of tissue that covers the skin and lines hollow organs. It is made up of tightly packed cells that form a protective barrier. The internal cavity of these organs is called the lumen, which is the space within the organ where substances pass through.Rate this question:
- 14.
Which of the following is false about exocrine glands?
- A.
Sweat glands
- B.
Uses ducts
- C.
Epithelial tissue
- D.
Salivary glands
- E.
Pituitary glands
Correct Answer
E. Pituitary glandsExplanation
The pituitary glands are not exocrine glands. Exocrine glands secrete their products through ducts, while the pituitary glands are part of the endocrine system and secrete hormones directly into the bloodstream. Therefore, the statement that the pituitary glands are false about exocrine glands is correct.Rate this question:
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- 15.
Which of the following is false about endocrine glands?
- A.
Adrenal glands
- B.
Secrete hormones
- C.
Use the bloodstream
- D.
Uses ducts
- E.
Pituitary glands
Correct Answer
D. Uses ductsExplanation
Endocrine glands are responsible for secreting hormones directly into the bloodstream, which then transport them to target cells or organs. Unlike exocrine glands, endocrine glands do not have ducts and release their secretions directly into the bloodstream. The adrenal glands and pituitary glands are examples of endocrine glands, and both of them secrete hormones without the use of ducts. Therefore, the statement "uses ducts" is false about endocrine glands.Rate this question:
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- 16.
In the extracellular matrix, _____ are long, fibrous proteins.
Correct Answer
elastinExplanation
Elastin is a type of long, fibrous protein found in the extracellular matrix. It is responsible for providing elasticity and flexibility to tissues, allowing them to stretch and recoil. Elastin is particularly abundant in tissues that require elasticity, such as the skin, blood vessels, and lungs. It forms a network of fibers that can stretch up to 150% of their original length and then return to their original shape. This property makes elastin crucial for maintaining the structural integrity and function of these tissues.Rate this question:
- 17.
In the extracellular matrix, _____ provides strength and the ability to resist stretching.
Correct Answer
collagenExplanation
Collagen is a protein that is a major component of the extracellular matrix. It provides strength and structural support to tissues, allowing them to resist stretching and maintain their shape. Collagen fibers are arranged in a dense network, forming a strong scaffold that gives tissues their mechanical properties. This protein is found in various connective tissues throughout the body, such as skin, tendons, ligaments, and bones, and is essential for maintaining tissue integrity and function.Rate this question:
- 18.
________ is considered anything outside the epithelial layer.
Correct Answer
External environmentExplanation
The term "external environment" refers to anything outside the epithelial layer. Epithelial tissues line the surfaces of organs, cavities, and structures in the body. Anything beyond this layer, such as the air, water, or other substances that surround the body, is considered part of the external environment. This includes factors like temperature, humidity, pollutants, and pathogens that can potentially interact with the body and affect its functioning.Rate this question:
- 19.
_______ is the immediate environment of most of the body's cells, and is considered the same as ______.
Correct Answer
Internal environment, ECFExplanation
The immediate environment of most of the body's cells is known as the internal environment. This internal environment is considered to be the same as the extracellular fluid (ECF). The ECF refers to the fluid that surrounds and bathes the cells, providing them with nutrients and removing waste products. It is important for maintaining the proper functioning of cells and ensuring their survival.Rate this question:
- 20.
______ is the most abundant substance in the body, and accounts for 60% of the weight.
Correct Answer
WaterExplanation
Water is the most abundant substance in the body, making up approximately 60% of its weight. It is essential for various bodily functions such as maintaining body temperature, transporting nutrients and oxygen, lubricating joints, and facilitating digestion and waste removal. Without water, the body cannot survive for long periods. Therefore, due to its abundance and vital role in the body, water is the correct answer.Rate this question:
- 21.
________ is the volume of water contained in within outer epithelial layer.
Correct Answer
Total body waterExplanation
Total body water refers to the volume of water present in all the compartments of the body, including the intracellular and extracellular spaces. The outer epithelial layer, which includes the skin, is part of the extracellular space. Therefore, the volume of water contained within the outer epithelial layer is included in the total body water.Rate this question:
- 22.
________ is located within the cells, and is rich in ______.
Correct Answer
ICF, sodiumExplanation
The answer is ICF, sodium. ICF stands for intracellular fluid, which is located within the cells. Sodium is a mineral that is abundant in the intracellular fluid.Rate this question:
- 23.
______ is located outside of cells, protein rich with _______.
Correct Answer
ECF, potassiumExplanation
The extracellular fluid (ECF) is located outside of cells and is rich in potassium. This means that the ECF, which includes fluids like blood plasma and interstitial fluid, contains a high concentration of potassium ions. Potassium is an essential mineral that plays a crucial role in various cellular functions, including maintaining proper fluid balance, nerve transmission, and muscle contractions.Rate this question:
- 24.
ECF is divided into _______, the fluid portion of blood, and _____.
Correct Answer
plasma, ISFExplanation
The correct answer is plasma, ISF. ECF, or extracellular fluid, is divided into two components: plasma, which is the fluid portion of blood, and ISF, which stands for interstitial fluid. Plasma is the liquid part of blood that carries nutrients, hormones, and waste products. ISF is the fluid that surrounds and bathes the cells, providing them with nutrients and removing waste products.Rate this question:
- 25.
Which of the following is incorrectly matched?
- A.
Radiation- heat from fire
- B.
Evaporation- sweat
- C.
Conduction- metal on skin
- D.
Filtration- internal heat
- E.
Convection- wind
Correct Answer
D. Filtration- internal heatExplanation
Filtration is the process of separating solid particles from a liquid or gas by passing it through a porous material. It does not involve internal heat. Internal heat refers to the heat generated within the body. Therefore, the pairing of filtration with internal heat is incorrect.Rate this question:
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- 26.
___________ control is within the organ of interest.
Correct Answer
IntrinsicExplanation
Intrinsic control refers to the control mechanisms that occur within an organ or tissue, allowing it to regulate its own function. This means that the control is originating from within the organ of interest itself, rather than being influenced by external factors or signals. Intrinsic control mechanisms can include autoregulation, feedback loops, and local signaling pathways that enable the organ to maintain homeostasis and respond to changes in its internal environment.Rate this question:
- 27.
_______ control is within the nervous and endocrine systems.
Correct Answer
ExtrinsicExplanation
Extrinsic control refers to the regulation of bodily functions that is mediated by the nervous and endocrine systems. These systems work together to maintain homeostasis by sending signals and releasing hormones to control various physiological processes. This type of control is external to the organ or tissue being regulated, as opposed to intrinsic control which is self-regulatory. Therefore, the given answer "Extrinsic" accurately describes control that is within the nervous and endocrine systems.Rate this question:
- 28.
___________ are used to maintain homeostasis.
Correct Answer
MechanismsExplanation
Mechanisms are processes or systems that regulate and maintain stability within an organism's internal environment, known as homeostasis. These mechanisms work to balance various physiological factors such as temperature, pH levels, and blood pressure, ensuring that the body functions optimally. By continuously monitoring and adjusting these factors, mechanisms help to keep the body in a state of equilibrium, allowing it to respond and adapt to changes in the external environment.Rate this question:
- 29.
_____ are two or more different tissues combined.
Correct Answer
OrgansExplanation
Organs are two or more different tissues combined. Organs are composed of various types of tissues that work together to perform specific functions in the body. They are higher-level structures that are formed when different tissues come together and interact. Examples of organs include the heart, lungs, liver, and brain. Each organ has its own specific function and contributes to the overall functioning of the body.Rate this question:
- 30.
________ system provides communication through hormones in the bloodstream.
Correct Answer
EndocrineExplanation
The endocrine system is responsible for communication within the body through the use of hormones. These hormones are released into the bloodstream by various endocrine glands and travel to target cells or organs, where they exert their effects. This system helps regulate various bodily functions such as growth, metabolism, reproduction, and response to stress. Unlike the nervous system, which uses electrical signals for communication, the endocrine system relies on chemical messengers (hormones) to transmit information throughout the body.Rate this question:
- 31.
_______ system communicates through electrical singals and neurotransmitters.
Correct Answer
NervousExplanation
The nervous system is responsible for communication within the body through electrical signals and neurotransmitters. It consists of the brain, spinal cord, and nerves, which transmit information between different parts of the body. Electrical signals called action potentials travel along nerves, allowing for rapid communication. Neurotransmitters are chemical messengers that transmit signals between nerve cells, allowing for communication between different parts of the nervous system. Therefore, the nervous system is the correct answer as it is the system that communicates through electrical signals and neurotransmitters.Rate this question:
- 32.
____ system protect body from the external environment.
Correct Answer
IntegumentaryExplanation
The integumentary system is responsible for protecting the body from the external environment. It consists of the skin, hair, nails, and various glands. The skin acts as a barrier, preventing the entry of pathogens and harmful substances. It also helps regulate body temperature and prevents excessive water loss. Hair and nails provide additional protection to sensitive areas such as the scalp and fingertips. The glands in the integumentary system produce sweat and oil, which further contribute to the protection and maintenance of the body.Rate this question:
- 33.
_____ system generate offspring.
Correct Answer
ReproductionExplanation
Reproduction is the process by which organisms produce offspring. In this context, the blank is asking for the name of the system that is responsible for generating offspring. Reproduction fits this description as it is the biological process through which new individuals of the same species are produced, ensuring the continuation of the species.Rate this question:
- 34.
_____ system filters blood to regulate concentrations, and eliminates wastes.
Correct Answer
UrinaryExplanation
The urinary system filters blood to regulate concentrations and eliminates wastes. It consists of the kidneys, ureters, bladder, and urethra. The kidneys filter waste products, excess water, and electrolytes from the blood to form urine. The urine then travels through the ureters and is stored in the bladder until it is eliminated through the urethra. This system plays a crucial role in maintaining the balance of fluids, electrolytes, and pH levels in the body, as well as removing metabolic waste products.Rate this question:
- 35.
_____ system brings oxygen into body and eliminate carbon dioxide.
Correct Answer
RespiratoryExplanation
The respiratory system is responsible for bringing oxygen into the body and eliminating carbon dioxide. It consists of the lungs, airways, and respiratory muscles. When we breathe in, oxygen enters the lungs and is transported to the bloodstream, where it is then delivered to the cells in the body. At the same time, carbon dioxide, a waste product of cellular metabolism, is carried by the bloodstream back to the lungs and expelled from the body when we breathe out. This continuous process ensures that our cells receive the oxygen they need and that waste carbon dioxide is efficiently removed.Rate this question:
- 36.
_______ system supports body, and allows voluntary movement and expressions.
Correct Answer
MusculoskeletalExplanation
The musculoskeletal system is responsible for supporting the body and enabling voluntary movement and expressions. It consists of the bones, muscles, tendons, ligaments, and other connective tissues that work together to provide structure, stability, and mobility to the body. The bones provide a framework, while the muscles allow for movement by contracting and relaxing. This system also plays a role in facial expressions, allowing us to convey emotions and communicate non-verbally.Rate this question:
- 37.
_______ system transports molecules throughout body in the bloodstream.
Correct Answer
CardiovascularExplanation
The cardiovascular system is responsible for transporting molecules throughout the body in the bloodstream. It consists of the heart, blood vessels, and blood. The heart pumps oxygenated blood from the lungs to the rest of the body, delivering nutrients and removing waste products. The blood vessels, including arteries, veins, and capillaries, carry the blood to various organs and tissues. This system plays a crucial role in maintaining homeostasis and ensuring the proper functioning of the body's cells.Rate this question:
- 38.
_______ system breaks down food and absorbs it into the body.
Correct Answer
GastrointestinalExplanation
The gastrointestinal system is responsible for breaking down food and absorbing it into the body. It includes organs such as the stomach, small intestine, and large intestine, which work together to digest food and extract nutrients. This system plays a crucial role in the digestion and absorption of nutrients, allowing the body to obtain energy and essential substances from the food we consume.Rate this question:
- 39.
_______ system defends the body against pathogens and abnormal cells.
Correct Answer
ImmuneExplanation
The immune system is responsible for defending the body against pathogens, which are disease-causing microorganisms, and abnormal cells. It consists of various organs, cells, and molecules that work together to recognize and eliminate harmful substances. The immune system is essential for maintaining overall health and preventing infections and diseases.Rate this question:
- 40.
______ is blood producing acids and proteins that are transported into lumen.
Correct Answer
SecretionExplanation
Secretion is the process by which substances are produced and released from cells. In the context of the given question, secretion refers to the production and release of acids and proteins into the lumen, which is a cavity or channel within a structure. This process is essential for various physiological functions, such as digestion and hormone production.Rate this question:
- 41.
_______ materials selectively put back in bloodstream.
Correct Answer
ReabsorptionExplanation
Reabsorption is the process by which certain materials are selectively put back into the bloodstream. This occurs primarily in the kidneys, where waste products, electrolytes, and water are filtered out of the blood and then reabsorbed back into the bloodstream. Reabsorption helps maintain the balance of fluids and electrolytes in the body and allows for the reclamation of valuable substances that may have been initially filtered out.Rate this question:
- 42.
_______ transports from lumen to bloodstream.
Correct Answer
AbsorptionExplanation
Absorption is the process by which substances are taken up from the lumen (the inner space) of the digestive tract into the bloodstream. It involves the movement of nutrients, water, and other molecules across the lining of the digestive tract and into the blood vessels, allowing them to be transported to various parts of the body. Therefore, absorption is the correct answer as it accurately describes the process of substances being transported from the lumen to the bloodstream.Rate this question:
- 43.
______ fluid from the bloodstream into tubules.
Correct Answer
FiltrationExplanation
Filtration is the process by which fluid is forced through a filter or a membrane, separating it from larger particles or substances. In the context of the question, the correct answer suggests that filtration is the mechanism by which fluid is moved from the bloodstream into tubules. This process is important in various biological processes, such as kidney function, where filtration helps in the removal of waste products and excess water from the blood.Rate this question:
- 44.
______ unabsorbed materials eliminated as feces.
Correct Answer
ExcretionExplanation
Excretion is the process by which unabsorbed materials are eliminated as feces. It is a vital function of the body that helps remove waste products, toxins, and excess substances from the body. Through excretion, the body maintains a balance of various substances and ensures the proper functioning of organs and systems. This process occurs mainly in the digestive system, where undigested food and other waste materials are formed into feces and expelled from the body through the rectum. Excretion is essential for maintaining overall health and preventing the buildup of harmful substances in the body.Rate this question:
- 45.
______ is a substance which dissolves in a solvent.
Correct Answer
SoluteExplanation
A solute is a substance that can dissolve in a solvent. When a solute is added to a solvent, it disperses evenly throughout the solvent, creating a homogeneous mixture. This process is known as dissolution. The solute particles become surrounded by solvent particles, forming solute-solvent interactions. This allows the solute to break down into individual particles and become dispersed throughout the solvent. Some common examples of solutes include sugar, salt, and various gases dissolved in water.Rate this question:
- 46.
________ is a substance in which a solute dissolves.
Correct Answer
SolventExplanation
A solvent is a substance that has the ability to dissolve other substances, known as solutes, in it. When a solute is added to a solvent, the solute particles disperse and mix evenly throughout the solvent. This process is known as dissolution. Solvents can exist in different states of matter, such as liquid, solid, or gas, and can vary in their ability to dissolve different solutes. Common examples of solvents include water, alcohol, and acetone. Solvents are widely used in various industries and everyday life for purposes such as cleaning, extraction, and chemical reactions.Rate this question:
- 47.
_______ is body temperature below the set point, and _______ is body temperature above the set point.
Correct Answer
Hypothermia, hyperthermiaExplanation
Hypothermia refers to a condition where the body temperature falls below the set point, which is the normal range of body temperature. It occurs when the body loses heat faster than it can produce it, leading to a dangerously low body temperature. On the other hand, hyperthermia is a condition where the body temperature rises above the set point. This can occur due to various reasons such as excessive heat exposure or an inability of the body to regulate its temperature properly. Both hypothermia and hyperthermia are abnormal deviations from the body's normal temperature regulation.Rate this question:
- 48.
_________ feedback regulates by changing the oppositedirection of the change that is set in motion, or restores a change.
Correct Answer
NegativeExplanation
Negative feedback is a regulatory mechanism that works by counteracting or reversing a change that has occurred in a system. It aims to maintain stability and equilibrium by opposing the initial change. In this context, the word "negative" suggests that the feedback response is in the opposite direction of the change that was initially introduced.Rate this question:
- 49.
______ feedback is the response of the system goes in the same direction as the change that initiated it to enhance the change.
Correct Answer
PositiveExplanation
Positive feedback is a type of feedback in which the response of the system amplifies or enhances the change that initiated it. In this case, the correct answer is "Positive" because it accurately describes the feedback that goes in the same direction as the change, thereby increasing or reinforcing the change. Positive feedback loops can be found in various systems, such as biological processes, climate systems, and even social dynamics.Rate this question:
- 50.
________ is a fact held within a narrow range, or a set point.
Correct Answer
Controlled variableExplanation
A controlled variable refers to a fact or factor that is deliberately kept constant or regulated within a specific range or set point during an experiment or study. This is done to ensure that any changes or effects observed in the experiment can be attributed to the manipulated variables or factors being tested, rather than external influences. By controlling the variable, researchers can isolate and analyze the specific impact of the manipulated factors on the outcome of the study.Rate this question:
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Mar 20, 2023Quiz Edited by
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Feb 06, 2010Quiz Created by
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